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7/29/2019 Vocabulary.docx b.inggris.docx Koplak
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A Focus on Vocabulary
by Fran Lehr, M.A., Lehr & Associates, Champaign, Illinois
Jean Osborn, M.Ed., University of Illinois at Urbana-Champaign
Dr. Elfrieda H. Hiebert, Visiting Research Professor, University of California - Berkeley
A Focus on Vocabulary is the second in the Research-Based Practices in Early Reading Series
published by the Regional Educational Laboratory at Pacific Resources for Education andLearning.
Research-Based Practices in Early Reading Series Product # ES0419
A Focus on Vocabulary
Of the many compelling reasons for providing students with instruction to build vocabulary,none is more important than the contribution of vocabulary knowledge to reading
comprehension. Indeed, one of the most enduring findings in reading research is the extent towhich students vocabulary knowledge relates to their reading comprehension (e.g., Anderson &
Freebody, 1981; Baumann, Kameenui, & Ash, 2003; Becker, 1977; Davis, 1942; Whipple,1925). Most recently, the National Reading Panel (2000) concluded that comprehension
development cannot be understood without a critical examination of the role played by
vocabulary knowledge. Given that students success in school and beyond depends in greatmeasure upon their ability to read with comprehension, there is an urgency to providing
instruction that equips students with the skills and strategies necessary for lifelong vocabulary
development.
The focus of this booklet, therefore, is on vocabulary instruction as a component of reading
comprehension. The booklet does not attempt to address issues related to stand-alone vocabularybuilding programs and strategies.
Vocabulary Instruction and English Language Learning Students
Students for whom English is not a first languageparticularly native Spanishspeakersmake up an increasing proportion of our school-age population (U.S.
Census, 2001). Many of these students have difficulty comprehending what they read.
A major cause of this difficulty is their lack of understanding of abstract English
words, especially those words (e.g.,freedom, motive, change) that they see in contentarea textbooks (Garca, 1991; Verhoeven, 1990).
The purpose of this booklet is to examine what research tells us about how students acquirevocabulary and about what instruction must do to help students develop the kind of vocabulary
knowledge that will contribute to their reading success. We begin by clarifying exactly what we
mean by vocabulary.
What Is Vocabulary?
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Broadly defined, vocabulary is knowledge of words and word meanings. However, vocabulary is
more complex than this definition suggests. First, words come in two forms: oral and print. Oralvocabulary includes those words that we recognize and use in listening and speaking. Print
vocabulary includes those words that we recognize and use in reading and writing. Second, word
knowledge also comes in two forms, receptive and productive. Receptive vocabulary includes
words that we recognize when we hear or see them. Productive vocabulary includes words thatwe use when we speak or write. Receptive vocabulary is typically larger than productive
vocabulary, and may include many words to which we assign some meaning, even if we dont
know their full definitions and connotationsor ever use them ourselves as we speak and write(Kamil & Hiebert, in press).
Adding further complexity, in education, the word vocabulary is used with varying meanings.
For example, for beginning reading teachers, the word might be synonymous with sightvocabulary, by which they mean a set of the most common words in English that young
students need to be able to recognize quickly as they see them in print. However, for teachers ofupper elementary and secondary school students, vocabularyusually means the hard words
that students encounter in content area textbook and literature selections.
For purposes of this booklet, we define vocabulary as knowledge of words and word meanings in
both oral and print language and in productive and receptive forms. More specifically, we use
vocabulary to refer to the kind of words that students must know to read increasingly demandingtext with comprehension. We begin by looking closely at why developing this kind of
vocabulary is important to reading comprehension.
The Importance of Vocabulary to Reading Comprehension
One of the most persistent findings in reading research is that the extent of students vocabulary
knowledge relates strongly to their reading comprehension and overall academic success (seeBaumann, Kameenui, & Ash, 2003; Becker, 1977; Davis, 1942; Whipple, 1925). Thisrelationship seems logical; to get meaning from what they read, students need both a great many
words in their vocabularies and the ability to use various strategies to establish the meanings of
new words when they encounter them. Young students who dont have large vocabularies oreffective word-learning strategies often struggle to achieve comprehension. Their bad
experiences with reading set in motion a cycle of frustration and failure that continuesthroughout their schooling (Hart & Risley, 2003; Snow, Barnes, Chandler, Goodman, &
Hemphill, 2000; White, Graves, & Slater, 1990). Because these students dont have sufficient
word knowledge to understand what they read, they typically avoid reading. Because they dont
read very much, they dont have the opportunity to see and learn very many new words. This sets
in motion the well known Matthew Effects, Stanovichs (1986) application of Matthew,
25:29the rich get richer and the poor get poorer. In terms of vocabulary development, good
readers read more, become better readers, and learn more words; poor readers read less, becomepoorer readers, and learn fewer words.
This particular relationship between vocabulary knowledge and reading comprehension seemsclear. But vocabulary knowledge contributes to reading success in other important ways that are
perhaps less obvious. For beginning readers, evidence indicates a link between word knowledge
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and phonological awareness. Young children who have a large number of words in their oral
vocabularies may more easily analyze the representation of the individual sounds of those words(see Goswami, 2001; Metsala & Walley, 1998). In addition, vocabulary knowledge helps
beginning readers decode, or map spoken sounds to words in print. If children have the printed
words in their oral vocabulary, they can more easily and quickly sound out, read, and understand
them, as well as comprehend what they are reading. If the words are not in childrens oralvocabulary, they have trouble reading the words and their comprehension is hindered (National
Reading Panel, 2000). Thus, an extensive vocabulary is the bridge between the word-level
processes of phonics and the cognitive processes of comprehension (Kamil & Hiebert, in press).The issue to address next, then, is just how many words do students need to know so as to read
with comprehension? This is exactly what constitutes an extensive vocabulary.
How Many Words Do Students Need to Know?
Over the years, estimates of student vocabulary size have varied greatly, hindered in part byissues such as the types of vocabularies being considered (e.g., receptive/ productive or
oral/print). Depending on how they approached such issues, early vocabulary researchersreported figures ranging from 2,500 to 26,000 words in the vocabularies of typical grade 1students and from 19,000 to 200,000 words for college graduate students (Beck & McKeown,
1991). As researchers began to define more clearly what they meant by vocabulary size, the
estimates became more precise. At the present time, there is considerable consensus amongresearchers that students add approximately 2,000 to 3,500 distinct words yearly to their reading
vocabularies (Anderson & Nagy, 1992; Anglin, 1993; Beck & McKeown, 1991; White et al.,
1990).
Perhaps a more useful way to approach the issue of vocabulary size is to consider the number of
different, or unique, words in the typical texts that students read in schools. But this approach
also raises questions. For example, what counts as a unique word? Is the possessive form of aword different from the original word and therefore unique? Can it be assumed that a student
who knows the word laugh also knows the words laughed, laughing, and laughter? Drawing on
a database of more than 5 million words taken from a sample of school texts used in grades 3
through 9, Nagy and Anderson (1984) grouped unique words into families. The studentsknowledge of the root word would help them determine a related words meaning when they
encounter that word in a text. To be included in a family, the relationship of a word had to be
semantically transparent. That is, the meaning of the related word can be determined by usingknowledge of its root word and the context of text. Therefore, words within a family related to
the root laugh can include laughed, laughing, and laughterbut not laughingstock. Based on this
definition, Nagy and Anderson estimated that school texts from grades 3 through 9 containapproximately 88,500 distinct word families. Clearly, acquiring meanings for this many words is
a formidable task.
Yet somehow most students do steadily acquire a large number of new words each school year.
To understand the magnitude of this accomplishment, consider what learning this number of
words would require in terms of instruction. To directly teach students even 3,000 words a year
would mean teaching approximately 17 words each school day (e.g., 3,000 words/180 schooldays). Estimates vary, but reviews of classroom intervention studies suggest that, in general, no
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more than 8 to 10 words can be taught effectively each week. This means no more than
approximately 400 words can be taught in a year (Stahl & Fairbanks, 1986). Using a simplecalculation, 3,000 - 400 = 2,600, produces the conclusion that students must find ways other than
direct classroom instruction to learn words.
So how do students acquire so many new words? An extensive body of research indicates thatthe answer is through incidentallearningthat is, through exposure to and interaction with
increasingly complex and rich oral language and by encountering lots of new words in text,either through their own reading or by being read to (National Reading Panel, 2000). However,
such incidental encounters cannot ensure that students will acquire indepth meanings of specific
words (Fukkink & de Glopper, 1998). For some words, such as those that are crucial forunderstanding a literature selection or a content area concept, most students need to have
intentional and explicitinstruction. We discuss each of these ways to acquire vocabulary in later
sections. First, however, we examine what knowing a word means.
What Does It Mean to Know a Word?
Establishing exactly what it means to know a word is no easy task. Is knowing a word beingable to recognize what it looks and sounds like? Is it being able to give the words dictionarydefinition? Research suggests that, in general, the answer to these questions is no. Knowing a
word by sight and sound and knowing its dictionary definition are not the same as knowing how
to use the word correctly and understanding it when it is heard or seen in various contexts (Miller& Gildea, 1987).
Acquiring Ownership of WordsHere is how the process of acquiring word knowledge appears to occur, based on the
research of Nagy, Anderson, and Herman (1987). Developing understandings of word
meanings is a long-term process, one that involves many encounters with both spoken
and written words in varying contexts. Heres how one group of researchers describesthis process: On the first encounter with a new word, a student stores in memory someinformation about how the word fits into what he is reading. This information is
reinforced each time he sees or hears the word. With each new encounter, the studentpicks up more information about the word from its use in various contexts. As a result,
the student gradually acquires ownership of the word.
Nagy and Scott (2000) identify several dimensions that describe the complexity of what it means
to know a word. First, word knowledge is incremental, which means that readers need to have
many exposures to a word in different contexts before they know it. Second, word knowledgeis multidimensional. This is because many words have multiple meanings (e.g., sage: a wise
person; an herb) and serve different functions in different sentences, texts, and evenconversations. Third, word knowledge is interrelatedin that knowledge of one word (e.g.,
urban) connects to knowledge of other words (e.g., suburban, urbanite, urbane).
What all of this means is that knowing a word is a matter of degree rather than an all-or-
nothing proposition (Beck & McKeown, 1991; Nagy & Scott, 2000). The degrees of knowing aword are reflected in the precision with which we use a word, how quickly we understand a
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word, and how well we understand and use words in different modes (e.g., receptive, productive)
and for different purposes (e.g., formal vs. informal occasions).
Knowing a word also implies knowing how that word relates to other knowledge (sometimes
called word schema). The more we know about a specific concept, for example, the more words
we bring to our understanding of that concept. Because we have individual interests andbackgrounds, each of us brings different words to shape that understanding.
Finally, knowing a word means being able to appreciate its connotations and subtleties. When we
know a word at this level, we can use and recognize it in idioms, jokes, slang, and puns
(Johnson, Johnson, & Schlicting, 2004).
Whats a Word Schema?
A word schema is a network of knowledge related to a word (Nagy & Scott, 1990).
Word schemas involve both semantic knowledge about the connections of word
meanings to specific concepts and linguistic knowledge about words, such as theirroots and their relationships to other words with the same roots. Here is an example.
Ramona is four years old. Already she has a fairly large schema for many simple
concepts. For example, to her, the word dog includes knowledge about the general
concept of dog as an animal, knowledge of one or two kinds of dogs, such as her
Lab, Gus, and her neighbors poodle, Misty. It also includes specific information aboutGus, such as the sounds he makes, and how he uses his legs when he runs and walks.
As a result, the word dog can activate many other words for Ramona to use to talk
about dogs.
As Ramona grows older, she might add dog knowledge that ranges from the namesof famous dogs in books, movies, and TV shows to how to train a dog, to the names for
parts of a dogs anatomy. She might also learn that the word dog can mean more thanan animal and be able to use the word in expressions such as Ill dog you until you do
what I told you to, that was a dog of a movie, or Im dog tired.
Ramona has also learned that words with similar word parts can have shared meanings,
although she is also aware that what seems like a root word may be somethingaltogether different. Thus, when Ramona encounters dog-eared, dogpaddle, and
doggedly in texts, she examines the context of their use to see if their meaning is
associated with the appearance or actions of dogs.
Instruction for Vocabulary Development
Over the past two decades, research has revealed a great deal about the kind of vocabulary
instruction that is most effective for helping students comprehend what they read (e.g.,
Baumann, Kameenui et al., 2003; Beck & McKeown, 1991; Blachowicz & Fisher, 2000; Nagy& Scott, 2000). Based on its analysis of this research, the National Reading Panel (2000)
concluded that no one single instructional method is sufficient for optimal vocabulary learning;
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therefore, effective instruction must use a variety of methods to help students acquire new words
and increase the depth of their word knowledge over time. Effective instruction includesopportunities for both incidental word learning and intentional word teaching.
What the National Reading Panel Says About the Role of Vocabulary in Reading
Instruction(Reprinted from National Reading Panel, 2000, p. 4-4)
1. There is a need for direct instruction of vocabulary items required for a specifictext.
2. Repetition and multiple exposure to vocabulary items are important. Studentsshould be given items that will be likely to appear in many contexts.
3. Learning in rich contexts is valuable for vocabulary learning. Vocabularywords should be those that the learner will find useful in many contexts. When
vocabulary items are derived from content learning materials, the learner willbe better equipped to deal with specific reading matter in content areas.
4. Vocabulary tasks should be restructured as necessary. It is important to becertain that students fully understand what is asked of them in the context ofreading, rather than focusing only on the words to be learned. Restructuring
seems to be most effective for lowachieving or at-risk students
5. Vocabulary learning is effective when it entails active engagement in learningtasks.
6. Computer technology can be used effectively to help teach vocabulary.7. Vocabulary can be acquired through incidental learning. Much of a students
vocabulary will have to be learned in the course of doing things other thanexplicit vocabulary learning. Repetition, richness of context, and motivation
may also add to the efficacy of incidental learning of vocabulary.
8. Dependence on a single vocabulary instruction method will not result inoptimal learning. A variety of methods was used effectively with emphasis onmultimedia aspects of learning, richness of context in which words are to be
learned, and the number of exposures to words that learners receive.
Incidental Word Learning
As we noted earlier, research indicates that most word learning occurs incidentally through
experiences with oral language and wide reading (National Reading Panel, 2000). Although thislearning is called incidental, childrens opportunities for word learning often reflect conscious
choices on the parts of parents, family members, and teachers to use language in ways that invitechildren to ask and answer questions and to hear and read words that expand their vocabularies.
Incidental Word Learning Through Oral LanguageLogic suggests that the more oral language experiences children have in their early years, themore words and word meanings they acquire. It is the kind and extent of these early oral
language experiences that profoundly affect childrens later reading and school success. Young
children whose experiences include hearing a lot of language and being encouraged to use and
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experiment with language themselves tend to achieve early reading success; children who have
limited experiences with language often have trouble learning to read, and as they progressthrough school, they remain at risk for reading and learning problems (see Dickinson & Tabors,
2001; Storch & Whitehurst, 2002).
Word Poverty(Moats, 2001)
Researcher Louisa Moats refers to the gap in word knowledge between advantaged and
disadvantaged children as word poverty. In her study of the language abilities of
kindergarten students in a large city district, Moats found that many children wereunable to name pictures that showed the meanings of words such as sewing or
parachute.
Oral Language Experiences at Home. The word-knowledge gap between groups of childrenbegins long before the children enter school. Hart and Risley (1995) found, for example, that 3-
year-olds in higher socioeconomic status (SES) families had vocabularies as much as five timeslarger than children in lower SES families. Children in higher SES homes engaged in many
interactive discussions with their parents. Their parents helped build the childrens language use
and knowledge through extensive repetitive and interactive talk, such as the following:
Child: Look! I painted.
Parent: You painted the whole picture by yourself?
By expanding upon and repeating the childs statement as a question, the parent signals a request
for the child to tell more. In contrast, Hart and Risley found that children in lower SES families
had many fewer such experiences. These children more often heard imperatives such as, Getdown! or Dont do that!
This last point is important in light of research showing that the sophistication of language
children hear and participate in is a stronger predictor of their later vocabulary knowledge than is
the number of words that they hear and speak (Weizman & Snow, 2001). For students withoutextensive oral language experiences, both English-speaking and English language learners, itsespecially important to hear oral English that incorporates the vocabulary they will encounter in
school texts.
Oral Language Experiences at School. Once children begin school, the teacher talk they hear
throughout the day poses opportunities to familiarize them with the kind of oral language that
promotes vocabulary growth. Yet, researchers have found that talk in primary and elementaryschool classrooms is often limited to commonly recognized words and largely involves concrete
talk about the here and now (Dickinson & Tabors, 2001; Snow, Tabors, Nicholson, & Kurland,
1995). Concrete talk in the form of display questions (e.g., What color is this? How many are
there?) has been observed to be prevalent in both preschool (Dickinson & Tabors, 2001) and in
elementary classrooms (Snow et al., 2000; see also, Dickinson & Smith, 1994).
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To counteract these frequently reported patterns, one group of researchers designed and
implemented an intervention called PAVEd for Success (for the two primary features of theprogram: phonological awareness and vocabulary enhancement) with classes of preschool
children (Schwanenflugel et al., in press).
Analyses of the interventions show that children in classrooms in which teachers consistentlyengaged children in interactive teacher-child talk and storybook reading ended up with larger
vocabularies than did children who served as controls.
Making Word Learning Part of Daily Routines
Researchers have suggested numerous ways to create opportunities for interactive
classroom talk as well as to expose children to new (and often intriguing) words
throughout the school day. For example, rather than reminding a student that he didntquite close the door, the teacher might tell the child to close the door because it is ajar.
Rather than asking a student to water a drooping plant, the teacher might say that the
plant is becoming dehydrated. Rather than telling students to line up faster, the teachermight ask them to stop dawdling. (See Dickinson & Tabors, 2001; Graves, Juel, &
Graves, 2004; Johnson et al., 2004; Stahl, 1999.)
As important as oral language experiences are, they are not sufficient by themselves to ensure the
kind of vocabulary growth that will lead to improved reading comprehension. One reason is that
most oral languagethe kind of language we use in daily conversations with people we know
lacks the varied word use found in written language. Hayes and Ahrens (1988) analysis
demonstrated the difference in word use in oral and written language. These researchers found
that childrens books contained almost twice as many infrequently used or rare words than even
adult conversation among college graduates. And its the exposure to infrequently used or rarewords that students need if they are to acquire the vocabulary that will enable them to
comprehend their increasingly complex school texts. For example, whereas we might say were
putting salt on our food, a character in a childrens book might be described as sprinkling salt on
his. We may refer to a storm coming, but in a childrens book, the storm might threaten or loomon the horizon.
Frequency of Word Use in Major Sources of Oral and Written Language
(Hayes & Ahrens, 1988)
Rare Words per 1,000
I. Printed texts
Abstracts of scientific articlesNewspapers
Popular magazinesAdult books
Childrens books
Preschool books
II. Television texts
128.068.3
65.752.7
30.9
16.3
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Prime-time adult shows
Prime-time childrens shows
III. Adult speech
Expert witness testimony
College graduates talk to friends/spouses
22.7
20.2
28.4
17.3
Note. Adapted from Vocabulary Simplification for Children: A Special
Case of Motherese, by D. P. Hayes and M. Ahrens, 1988,Journal of Child
Language, 15, p. 401. Copyright 1988 by Cambridge University Press.
Adapted with permission.
Incidental Word Learning Through Teacher Read-AloudsBecause childrens books often contain rich and descriptive language, reading them aloud to
student can be an excellent way to focus their attention on words. Its not surprising, then, that
reading aloud childrens books has been found to increase the vocabularies of students from
preschool through the elementary grades (e.g., Dickinson & Smith, 1994; Elley, 1989; Penno,Wilkinson, & Moore, 2002; Robbins & Ehri, 1994; Stahl, Richek, & Vandevier, 1991).
However, reading aloud by itself is not sufficient to either build vocabulary or to increase
comprehension. To understand a story, students must relate their existing knowledge to thewords and ideas in the story. This can be a challenging task, especially for young children with
limited oral vocabularies (Whitehurst et al. 1994). Some researchers contend that the real value
of reading aloud activities for vocabulary growth lies not in the reading alone, but in the teacher-
student talk that accompanies the reading. The value of talk around book reading lies in the way
it can promote students familiarity with new, or rare, words (Dickinson & Smith, 1994). Beckand McKeown (2001) emphasize that it is through the talk surrounding read-aloud activities that
students gain experience with decontextualized book language that is, the language thatrepresents ideas and concepts.
Talking About Books(McKeown & Beck, 2003)
Developed by Beck and McKeown (2001; McKeown & Beck, 2003), Text Talk is
designed to increase both comprehension and vocabulary by incorporating word
learning in the context of reading new books. Heres how one teacher used Text Talk
to introduce the word absurd as part of their introduction to Tim EgansBurnt Toast on
Davenport Street:
(In the story, a fly tells Arthur he can have three wishes if he didnt kill him. Arthur
says that its absurd to think a fly can grant wishes.)
Teacher:
If I told you that I was going to stand on my head to teach you, that would be absurd. If
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someone told you that dogs could fly, that would be absurd.
Ill say some things, and if you think they are absurd, say: Thats absurd! If youthink they are not absurd, say: That makes sense.
I have a singing cow for a pet. (absurd)
I saw a tall building that was made of green cheese. (absurd)
Last night I watched a movie on TV. (makes sense)
This morning I saw some birds flying around the sky. (makes sense)
Who can think of an absurd idea? (When a child answers, ask other children if they
think the idea is absurd, and if so, to tell the first child: Thats absurd!)
Beck and McKeown (2001) report that Text Talk has proved successful in helpingstudents retain new words and recognize them in later reading.
Incidental Word Learning Through Wide ReadingA number of researchers have found that once students are reading on their own, the amount of
time they spend reading is one of the best predictors of their vocabulary size (e.g., Herman,
Anderson, Pearson, & Nagy, 1987; Miller & Gildea, 1987). Cunningham and Stanovich (1991)
found, for example, that that even after accounting for general intelligence and decoding ability,reading volume (amount of time spent reading) contributed significantly and independently to
vocabulary knowledge for students in grades 4, 5, and 6. Cunningham and Stanovich (1998)
argue further that if most vocabulary is acquired incidentally, then the only opportunities forstudents to acquire new word meanings occur when they are exposed to new words in written or
oral language that is outside their existing vocabulary. Given the findings of Hayes and Ahrens
(1988) about the frequency of rare words in printed materials as compared to oral language, it is
evident that this exposure to new words will happen more often as a result of reading rather thanof engaging in most kinds of oral language activities.
Beyond providing exposure to a range of new and unfamiliar words, reading widely contributesto vocabulary growth by offering students opportunities to make connections among familiar
words and unfamiliar but semantically related wordsword families. As part of the study we
mentioned earlier, Nagy and Anderson (1984) found that of the 10,000 or so new words that
grade 5 students encounter in their reading, some 4,000 are derivatives of familiar words; that is,compound words and words with suffixes or prefixes, and another 1,300 are inflections of
familiar words.
How Wide Reading Can Aid Vocabulary Growth
(Stahl, 1999)
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Much of a students annual growth in reading can come from incidental learning.
If Jacob, a grade 5 student, reads for one hour each day, five days a week (bothin and out of school), at a fairly conservative rate of 150 words per minute, he
will encounter 2,250,000 words in his reading over a school year.
If 2 to 5 percent of the words Jacob encounters are unknown to him, he willencounter from 45,000 to 112,500 unknown words.
If, as research has shown, students can learn between 5 and 10 percent ofpreviously unknown words from a single reading, Jacob will learn, at
minimum, 2,250 new words each year from his reading.
The Kinds of Reading Necessary to Produce Vocabulary Growth. Some researchers suggestthat almost any reading will produce vocabulary growth (Krashen, 1993). Others contend that, ifstudents consistently select texts below their current reading levels, even wide reading wontresult in measurable vocabulary growth (Carver, 1994). Nor is reading text that is full of
unfamiliar words likely to produce large gains in word knowledge (Shefelbine, 1990). Forstudents to get the most out of wide reading, the conclusion of most researchers is that they
should read for various purposes and read texts at various levels of difficulty. Students should
read some text simply for enjoyment and some text that challenges them (see National ReadingPanel, 2000).
Researchers who have observed students reading independently in classrooms also suggest thatteacher guidance to students in selecting books can make independent reading periods
productive. Teachers can direct students to books at appropriate reading levels and point out
books that might be of interest to individual students (Anderson, 1996). In addition, setting aside
time for students to talk with each other about what they read can contribute to the effectivenessof independent reading time (Anderson, 1996).
As is true for any method of promoting vocabulary growth, wide reading has some limitations.
One limitation is that, although wide reading may be effective in producing general vocabulary
growth, it may not be an effective method for teaching the specific words that students need to
comprehend a particular literature selection or a particular content area textbook. Anotherlimitation is that wide reading alone cannot ensure that students develop the kind of word-
learning strategies they need to become independent word learners. For these kinds of word
learning, many students require intentional, explicit instruction.
Intentional, Explicit Instruction
Research indicates that the intentional, explicit teaching of specific words and word-learningstrategies can both add words to students vocabularies (see Tomeson & Aarnoutse, 1998; Whiteet al., 1990) and improve reading comprehension of texts containing those words (see McKeown,
Beck, Omanson, & Pople, 1985; Stahl & Fairbanks, 1986). Whereas intentional instruction can
benefit all students, it is especially important for students who have not developed the decodingand comprehension skills necessary for wide reading. For these students in particular,
intentional, explicit teaching of specific word meanings and of word-learning strategies is
especially important (National Reading Panel, 2000).
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Specific word instruction refers to vocabulary instruction that enables students to develop in-
depth knowledge of important wordsthat is, to know words well enough to access informationabout them from memory as they read. The question often posed by teachers is which specific
words should be taught?
Choosing Words for InstructionThe question of which specific words to teach has no simpleor widely agreed uponanswer.
Many teachers turn to the teachers editions that accompany their comprehensive reading
programs. Virtually all of these teachers editions include lists of words deemed important foreach selection in the program, along with activities for teaching those words. Based on analyses
of such lists, however, Hiebert (in press) suggests that many of the recommendations are veryrare wordsthose that can be expected to occur once or fewer times in a million words of school
texts.
As weve discussed, the childrens trade books that students hear and read contain many rarewords. In a comprehensive reading program, however, the words targeted for direct instruction
often are so rare they are unlikely to occur again in the texts students read over a school year including texts that are part of the reading program. Further, many of the targeted words mayoccur only once in the particular selection that students are reading.
In addition, the teachers editions of comprehensive reading programs often ignore words that
are used commonly in texts but have different meanings in discussions of different subjects, such
as volume (science: a measurement of a space; music: degree of loudness; literature: one book in
a set of books); solution (social studies: the answer to a problem; science: one substancedissolved in another); and meter(literature: poetic rhythm; mathematics: a unit of length;
science: a device for measuring flow). Some students will need help with such words because
they arent aware of subject-specific differences.
To assist teachers in making word-choice decisions, researchers have proposed several criteria
(see Beck, McKeown, & Kucan, 2002; Biemiller & Slonim, 2001; Hiebert, in press; Nation,
2001). In general terms, these criteria focus on two major considerations:
Words that are important to understanding a specific reading selection or concept. Words that are generally useful for students to know and are likely to encounter with
some frequency in their reading.
Why Not Teach All Unknown Words in a Text?
(Armbruster, Lehr, & Osborn, 2001)
The text may have a great many words that are unknown to studentstoo manyfor direct instruction.
Direct vocabulary instruction can take a lot of class time time that teachersmight better spend having students read.
Students may be able to understand a text without knowing the meaning ofevery word in the text.
Students need opportunities to use word-learning strategies to independently
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learn the meanings of unknown words.
Importance. Words serve different purposes in language. Function words are words that cue areader or speaker to the structure of the sentence: are, that, a, to, or, the, of, and so forth.
Function words make spoken language meaningful and written language coherent and readable.
Content words are the words that communicate meaning in text (Stahl & Nagy, 2000). Clearly,students must know both kinds of words to understand what they read. Fortunately, the number
of function words in English is fairly limited107 words have been found to account for
approximately 50 percent of the total words in texts (Zeno, Ivens, Millard, & Duvvuri, 1995) and most students learn these words as part of their oral language development. Therefore,
beyond beginning reading, these words are not good candidates for intentional instruction (Kamil
& Hiebert, in press). Unfortunately (for instructional purposes), the number of content words is
virtually unlimited. Because of this, the second criterion for word selection, the usefulness of awordthe frequency with which it is likely to appear in text must be considered.
Usefulness and Frequency. Beck et al. (2002) propose that teachers should place major
consideration on words usefulness and frequency of use. To help in this endeavor, they
categorized words into three tiers:
Tier One consists of words such as clock, baby, and happy whose meanings students arelikely to know.
Tier Two is made up of words such asfortunate, maintain, and merchantthat are likelyto appear frequently in a wide variety of texts and in the written and oral language of
mature language users (2002, p. 16), but whose meanings students are less likely toknow.
Tier Three is made up of words such as irksome,pallet, and retinue that appear in textrarely. Although these rare words are often unknown to students, their appearance in texts
is limited to one or two occurrences, and because they are often specific to particular
content, students can use the context of texts to establish their meaning.
Beck et al. (2002) suggest that for instructional purposes, teachers should ignore Tier One and
Tier Three words and concentrate on Tier Two words. Their argument is that most studentsalready know Tier One words and that Tier Three words should be taught at point of contact, or
as they occur in reading. Tier Two words, however, appear often in student texts, so they are the
words that can add most to students language knowledge.
Tier Two words include: (1) words that are characteristic of mature language users and appear
frequently across a variety of contexts; (2) words that lend themselves to instruction and that canbe worked with in a variety of ways so that students can build in-depth knowledge of them and
their connections to other words and concepts; and (3) words that provide precision and
specificity in describing a concept for which the students already have a general understanding
(Beck et al., 2002).
Teachers can identify Tier Two words by deciding whether their students already have ways toexpress the concepts represented by the new words. Beck et al. (2002) propose that teachers ask
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themselves whether their students will be able to explain the new words by using words they
already know. If so, this suggests that the new words offer students more precise or sophisticatedways of referring to concepts they already know something about.
Guidelines such as these are useful, but in the complex and diverse settings that are American
classrooms, they need to be applied with sensitivity to the needs of students. Further, it should beremembered that the Three Tier model assumes that students are fluent readers of Tier One
words. As is evident in studies of students fluency, however, such fluency cannot be assumed(Pinnell et al., 1995). When students are not fluent with Tier One words, using context to figure
out Tier Three words will be difficult.
Some Criteria for Identifying Tier Two Words
(Beck et al., 2002, p. 19)
Importance and Utility: Words that are characteristic of mature language usersand appear frequently across a variety of domains.
Instructional Potential: Words that can be worked with in a variety of ways sothat students can build deep knowledge of them and of their connections to
other words and concepts.
Conceptual Understanding: Words for which students understand the generalconcept but provide precision and specificity in describing the concept.
Teaching Specific Words
Research suggests many different methods for teaching specific words related to specific texts as
well as specific sets of words related to particular topics. Graves (2000) identifies three types ofword-learning tasks facing students:
Words that are synonyms for words that students already know; Words that students know at some level but that have multiple meanings, such as
attention, channel, andpractice; and
Words that represent concepts that may be new to students, such as liberty, biome, andprobability.
For each type of learning task, we highlight an instructional strategy from the many that areavailable (see Graves et al., 2004; Stahl, 1999). These strategies are simply examples; an
instructional strategy is not limited to a particular type of task. In effective instruction, teachers
employ a variety of strategies.
Teaching Unknown Words: Synonyms. Connecting important selection words to familiar
synonyms before students read can be an efficient and minimally disruptive way to help them getthe most from reading. Teachers can provide this instruction economically by writing on the
board sentences that contain the target words and providing quick definitions that use synonymsstudents are likely to know. For example, for the word benevolent, the teacher might write, The
benevolent king was loved by his people. Then she can either give a simple definition for
benevolent(kind) or ask students to determine the meaning from the context of the sentence.
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Such activities can give students the background they need to understand the word when they see
it in the text (Graves et al., 2004).
Teachers also can use synonyms as part of point-of-contact teaching for particular words as
students are reading. For example, if a teacher notices that students seem puzzled by a word in a
passage, he can quickly say, for example, benevolent means kind and move on. If necessary,the teacher might expand the definition, but not to the extent that it disrupts the flow of the
reading.
Teaching Multiple-Meaning Words: Semantic Maps. Semantic maps can be an effective means
to expand students knowledge of words with which they are already familiar but which havemultiple meanings or are part of an extensive network of related words (Johnson & Pearson,
1984; Pittelman, Heimlich, Berglund, & French, 1991).
A semantic map is a graphic organizer that is organized around a word that represents an
important concept (e.g., movement). On the map, related words are clustered around the target
word according to criteria that teachers or students choose. These criteria might include suchfeatures as similar or dissimilar attributes, connotative or denotative meanings, or even shared
linguistic components.
Semantic Map forMovement
Teaching Words for New and Complex Concepts. One method for teaching words for new and
complex concepts focuses on having students identify critical attributes associated with a word
(Frayer, Frederick, & Klausmeier, 1969). Teachers lead students in a discussion where they
compare and contrast essential features and examples of a concept. For example, an essentialfeature of a globe is that it is a sphere or ball-like and not flat. An example of a globe is a globe
of the earth. A map is not an example of a globe because maps are flat.
Students can identify features and examples for a concept after a teacher-led discussion. This
activity can be aided with a visual representation, such as a four-square concept map (Eeds &
Cockrum, 1985). The example below is for a Social Studies lesson on Citizenship for grades 4 or5. In the upper right square, examples of the word, such as following rules and laws or taking
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care of the environment, are written. In the lower right square, non-examples of citizenship are
identified, such as not letting other people express their feelings or speeding or littering. Theupper left square is the space for writing a definition, while in the lower left square, statements of
what the concept is not are written. A completed box might look like this:
Four-Square Concept Map for CitizenshipEssential Features Example
Yes
Carrying outactions that show
awareness of how
personal actionsaffect others in the
community.
Following rulesand laws.
Taking care of theenvironment.
No
Being popular. Getting other
people to think justlike you do.
Not letting otherpeople express
their ideas. Speeding or
littering.
Teaching Independent Word-Learning StrategiesGraves (2000) notes that if students are to be successful in understanding unfamiliar vocabulary
in their reading, they need to learn aboutwords not simply acquire new words. Instruction thatsupports independent word-learning strategies guides students in how to go about determining
the meanings of unknown words.
Independent word-learning strategies are procedures that teachers can model and teach explicitlyto students to show them how to go about determining the meanings of unknown words (Baker,
Simmons, & Kameenui, 1998).
Generative Word KnowledgeIndependent word-learning strategies support a generative knowledge of words that
transfers and enhances students learning of words in addition to the specific wordsthat are the focus of instruction.
Several researchers have found that directly teaching wordlearning strategies can help students
become better independent word learners (Baumann, Edwards, Boland, Olejnik, & Kameenui,
2003; Blachowicz & Fisher, 2000; National Reading Panel, 2000). The effective word-learningstrategies they have identified include how to use dictionaries, how to identify and use context
clues, and how to use word-part information (morphological analysis).
Using Dictionaries. Instruction in dictionary use that simply has students look up words andwrite definitions seldom produces indepth word knowledge (Scott & Nagy, 1997). This is not to
say that dictionaries are not important aids to word learning. It means that instruction must showstudents how to use the definitions they find in a dictionary. Effective dictionary instruction
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includes teacher modeling of how most effectively to look up an unknown word and thinking
aloud about how to select which is the most appropriate definition for a particular context(Graves, et al., 2004).
Using Dictionaries and Other Reference Aids: An Example of Classroom Instruction
(Armbruster et al., 2001, p.38)
As students read a text, a grade 2 teacher discovers that many of his students dontknow the meaning of the word board, as in the sentence, The children were waiting toboardthe buses. The teacher demonstrates how to find boardin the classroom
dictionary, showing students that there are four different definitions for the word. Hereads the definitions one at a time, and the class discusses whether each definition
would fit the context of the sentence. The students easily eliminate the inappropriate
definitions ofboard, and settle on the definition, to get on a train, an airplane, a bus,
or a ship.
The teacher next has students substitute the most likely definition for boardin theoriginal sentence to verify that it is The children were waiting to get onthe busesthat makes the best sense.
Identifying and Using Context Clues. Context clues are clues to the meaning of a word that are
contained in the text and illustrations that surround it. Context clues can include definitions,
examples, and restatements, as well as charts, pictures, and type features. In one study, middleschool students who were taught to identify and use specific types of both linguistic information
(words, phrases, sentences) and nonlinguistic information (illustrations, typographic features)
were then able to use this information to unlock the meanings of unfamiliar words in text
(Baumann, Edwards, et al., 2003).
Not all contexts are helpful. In some cases, the context can be of little assistance in directingreaders toward the specific meaning of a word. Beck, McKeown, and McCaslin (1983) called
these nondirective contexts. Heres an example of such a context: We heard the back dooropen, and then recognized the buoyantfootsteps of Uncle Larry. The context forbuoyantis
unhelpful because a number of possible meanings could fit the word, including heavy, lively,
noisy,familiar, dragging, andplodding. Another example of a nondirective context is Thepolice arrived to arrest him for the dastardly deed of bringing donuts and coffee to the homeless
people in the park. Here the context is misleading because dastardly is used sardonically.
Therefore, the context offers no clue to help determine its meaning.
Using Context Clues: An Example of Classroom Instruction(Armbruster et al., 2001)
In a grade 3 class, the teacher models how to use context clues to determine wordmeanings as follows:
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Student (reading the text):
When the cat pounced on the dog, the dog jumped up, yelping, and knocked over a
lamp, which crashed to the floor. The animals ran past Tonia, tripping her. She fell to
the floor and began sobbing. Tonias brother Felix yelled at the animals to stop. As the
noise and confusion mounted, Mother hollered upstairs, Whats all that commotion?
Teacher:
The context of the paragraph helps us determine what commotion means. Theres
yelping and crashing, sobbing and yelling. And then the last sentence says, as the
noise and confusionmounted. The authors use of the words noise and confusion
gives us a very strong clue as to what commotion means. In fact, the author is really
giving us a definition there, because commotionmeans something thats noisy andconfusinga disturbance. Mother was right; there was definitely a commotion!
Using Word-Part Clues/Morphology.Morpheme is the name for meaningful word parts that
readers can identify and put together to determine the meaning of an unfamiliar word.
Knowledge of morphemes and morphology, or word structure, plays a valuable role in word
learning from context, because readers can use such knowledge to examine unfamiliar words andfigure out their meanings (Carlisle, 2004).
It is estimated that more than 60 percent of the new words that readers encounter have easily
identifiable morphological structurethat is, they can be broken into parts (Nagy, Anderson,
Schommer, Scott, & Stallman, 1989). Researchers have focused considerable attention on the
value of teaching roots, prefixes, and suffixes for purposes of vocabulary development.
More About Morphemes and MorphologyA morpheme is a linguistic element of meaning that cannot be divided into smallermeaningful parts. For example, words such as brave and stone are morphemes, as are
word parts such as -ly, as found in bravely, and -s, as found in stones.
Morphology is the study of word formation, including the origin and function of
inflections, or changes made to words to show such things as tense, case, or number(e.g., looked, looking, and looks from look) and derivatives, or words that are formed
from other words (e.g., sadly and sadness from sad).
Root Words. The Nagy and Anderson (1984) analysis of printed school English made clear that alarge number of words that students encounter in reading are derivatives or inflections of familiar
root words. Several researchers have argued, in fact, that focusing vocabulary instruction on
acquiring root words is an effective way to address the large number of words that students mustlearn each year (e.g., Anglin, 1993; Biemiller & Slonim, 2001).One researcher suggests that
students acquire about 1,200 root word meanings a year during the elementary school years
(Anglin, 1993). Other researchers place that number at about 600 root word meanings per yearfrom infancy to the end of elementary school (Biemiller & Slonim, 2001).
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Prefixes and Suffixes. The presence of a prefix at the beginning of a word requires that a reader
attend to it immediately. Fortunately, a relatively small number of prefixes are used in a largenumber of words. Indeed, nine prefixes account for 75 percent of words with prefixes (White,
Sowell, & Yanigihara, 1989). Further, prefixes tend to be spelled consistently and have a clear
lexical meaning, which makes prefix instruction and learning at grades 3 through 5 both fairly
straightforward and useful.
Although there is general agreement on the value of teaching prefixes, there is less agreement onthe value of teaching suffixes. Stahl (1999) contends, for example, that because many suffixes
have vague or unhelpful meanings, they can often confuse more than help students. Learning that
-iousmeans state or quality of may not help students learn the meanings or much about wordssuch as ambitious or gracious. Some suffixes, such as -less(without) and -ful(full of ), are
more stable, or obvious, in meaning and thus easy for students to understand and apply to
words.
The most frequently occurring suffixes in printed school English are inflectional endings such as
-s, -es, -ed, -ing, -en, -er, and -est. Most young students use these endings in their oral languageand so should have few problems learning and using them (although they may pose problems forELL students). Derivational suffixes such as -y, -ly, -ial, and -ic appear in fewer than 25 percent
of all the words that contain suffixes, but they also can be useful to teach. For example, knowing
the meanings of the -ial(relating to) and -y(being or having) suffixes can aid in figuringout rare words such as exponential and unwieldy (White et al., 1989).
To be most effective, word-part instruction should teach students the meanings of particularword parts as well as a strategy for when and why to use them. In a project where fifth graders
became more adept at using word parts within new words, teachers taught word parts through a
four-step lesson (Baumann, Edwards, et al., 2003). The successful instruction did not require
students to recite the meanings of word parts they encountered. Rather, it involved having themread texts with words that use the word parts and gave them opportunities to learn about word
origins, derivations, and usage. Such a slant toward words can stir students interest in learning
more about language and building word consciousness.
Prefixes and Suffixes That Account for Approximately 75% of Affixed Words
(White, Sowell, & Yanagihara, 1989)
Prefixes % of All
Suffixed
Words
(Cumulative)
Suffixes % of All
Prefixed
Words
(Cumulative)1. un- (not)
2. re- (again)3. in-, im-, il-, ir- (not)
4. dis-
5. en-, em-
6. non-7. in-, im- (in)
26
4051
58
62
6669
-s, -es
-ed-ing
-ly
-er. -or(agent)
31
5165
72
76
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8. over-
9. mis-
72
75
Note. Adapted from Teaching Elementary Students to Use Word-Part Clues, by T. G.White, J. Sowell, and A. Yanagihara, 1989, The Reading Teacher, 42, pp. 303-304
Table 1 and Table 2. Copyright 1989 by the International Reading Association.Adapted with permission.
Developing Word Consciousness
Word consciousness is an awareness of and interest in words, their meanings, and their power
(Anderson & Nagy, 1992; Nagy & Scott, 2000; Graves & Watts-Taffe, 2002). Wordconsciousness involves knowing that some words and phrases can simultaneously feel good on
the tongue and sound good to the ear. Students who are word conscious enjoy words and are
eager to learn new words. Curiosity about words includes learning the histories of words such as
knowing that words have come into English from many different languages including Hindi
(e.g., dungaree,pundit,juggernaut, khaki), Russian (e.g., tundra, sputnik), and Chinese (e.g.,typhoon, kowtow), as well as from the better known sources of Latin and Greek.
Word consciousness also means learning about the ways in which words are used figuratively
such as idioms(e.g., on the same boat, get ahead of ones self) and learning the pleasures ofplaying with words. Word playjokes, puns, riddles, tongue twisters, and so forthis critical to
the vocabulary development of all students but especially for ELLs who often focus on the literalmeanings of words.
Through activities such as Hink Pinks that use rhyming words (e.g., an impertinent young man isa rude dude) or homophones (e.g., define aflower flouror a brake break), students can play with
words and understand underlying concepts. Teachers have available any number of books (e.g.,Espy, 1982; Johnson, 1999) that can be used for a host of inventive and diverse word playactivities. In addition, they can access numerous websites that contain word games, identify
words that are new to English (e.g., blog) focus on Latin and Greek elements in English, and
have rhyming dictionaries.
What About Computer-Related Instruction?
Although the National Reading Panel (2000) cites computer technology as a promising techniquefor increasing vocabulary, little research yet exists to provide direction for computer-related
instruction. A few studies (Davidson, Elcock, & Noyes, 1996; Heller, Sturner, Funk, & Feezor,
1993; Reinking & Rickman, 1990) do suggest some possibilities for ways that computers might
assist in vocabulary learning. Wood (2001) suggests, for example, that the greatest potential ofcomputer technology lies in certain capabilities that are not found in print materials, including:
Game-like formats. Such formats may be more effective at capturing students attentionthan textbooks and workbooks.
Hyperlinks. Clickable words and icons placed in online text can offer studentsopportunities to encounter new words in multiple contexts by allowing them quick access
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to text and graphics. When they are well designed, such extensions can add depth to word
learning, particularly in the area of content-specific words.
Online dictionaries and reference materials. Devices that allow students to click on wordsto hear them pronounced and defined may extend students understandings of new words.
Animations. Animated demonstrations of how the human heart works or what life waslike in Ancient Egypt may hold students interest, and when combined with audionarration or text captions and labels, they offer potential for word learning.
Access to content-area-related websites. These websites, such as those operated byNASA, the Smithsonian, various museums, and numerous libraries, allow students quickaccess to photographs, maps, and voice-over narration and text that may both reinforce
content-area vocabulary and relate new words to existing concepts.
The key to the success of computers in vocabulary learning, Wood (2001) argues, comes from
programs that help students really know words rather than just engage them in drill and practice.
Instruction for English Language Learners
The increasing number of ELLs in our schools, coupled with the established importance ofvocabulary to comprehension, suggests the need for an intensive research focus on whichinstructional methods are most effective with students for whom English is not their first
language. Until recently, however, there have been few experimental vocabulary interventions
with school age American students who are learning to speak English at the same time that theyare learning to read. With the report of the National Literacy Panel on Language Minority
Children and Youth soon to be released and the initiation of vocabulary interventions by
researchers such as Caldern and colleagues (in press) and Carlo and colleagues (2004), the
situation is beginning to change. The National Literacy Panels preliminary results (August,2004) indicate that whereas some differences between the two groups exist, the types of things
that benefit first-language learners also help second-language learners.
One difference between groups is the resources that students can bring to bear in learning new
words in English (Bravo, Hiebert, & Pearson, 2004). For students who are native Spanish
speakers, an important resource is the presence of many words in school texts that have a Latinorigin. Because Spanish is closely tied to Latin, students who are native Spanish speakers may
draw on their knowledge of these shared root words or cognates as they learn to read English.
Teaching About Cognates
It is estimated that there are between 10,000 and 15,000 Spanish- English cognates (Nash, 1997).
These cognates may account for as much as one-third to one-half of the average educated
persons active vocabulary, indicating that instruction in how to use cognate knowledge can behighly beneficial to ELLs who are native Spanish speakers. Research by Nagy and colleagues
(Nagy, Garca, Durgunoglu, & Hancin-Bhatt, 1993) indicates this to be the case.
Native Spanish-speaking ELLs who were aware of cognates in English and Spanish had higher
levels of English reading comprehension than did their peers who were not aware of these
connections.
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Others caution that Spanish-English cognates are of many different types, and that low-
frequency words in Spanish are unlikely to be known by ELLs who are not literate in their nativelanguage (Bravo et al., 2004). It may be, however, that there is a sufficiently large group of
Spanish words frequently used in oral Spanish that can be used to build the awareness strategy
identified as characterizing better comprehenders (Nagy et al., 1993).
10 Common English Words and Their Latin and Spanish Equivalents
(Kamil & Hiebert, in press)
English
commonword
Examples of
English literary/academic
words
Latin root
Spanish
commonword
brave
bug
dig
empty
enough
first
mean
moon
sell
wash
valiant, valorous, valor
insect, insecticide, insectivore
cavern(ous), cave, cavity,excavate
vacant, vacate, vacancy
sufficient, suffice, sufficiency
prime, primate, primal, primacy,
primary, primer, primitive
significance, significant
lunar, lunacy, lunatic, lunation
vendor, vend, venal
lather, lavatory
valere (to be strong)
insectum
cavus (hollow)
vacare (to be empty)
sufficiere (to provide)
primus (first)
significans (meaning)
luna (moon)
venus (sale)
lavare (to wash)
valiente
insecto
excava
vaca
suficiente
primero
significar
luna
vender
lavar
Note. Adapted from The Teaching and Learning of Vocabulary: Perspectives andPersistent issues, by M. L. Kamil and E. H. Hiebert, in press. In E. H. Hiebert and M.
L. Kamil (Eds.),Bringing Scientific Research to Practice: Vocabulary, Mahwah, NJ:Lawrence Erlbaum. Copyright 2004 by Lawrence Erlbaum. Adapted with permission.
Just as Spanish-English cognates vary considerably in their usefulness, it should also be
remembered that the relationships between English and students native languages are many. For
the students whose native languages are not among the Latin-based languages (e.g., Spanish,Romanian, Portuguese, Italian, French), these shared cognates will not be available as a resource.
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However, learning the morphology of Latin-based words is critical to understanding the
vocabularies of content area and literary texts (Calfee & Drum, 1986).
Teaching Specific Vocabulary to ELL Students Through Childrens Literature The Vocabulary
Improvement Project (VIP) is an adaptation for upper elementary ELL students of the Text Talk
method (Carlo et al., 2004). Within Text Talk, which was developed by Beck and McKeown(2001), books are chosen carefully to focus on particular words and aspects of word knowledge.
The teaching centers on vocabulary in the chosen books, but it also includes activities such aslessons on identifying words in context.
The literature used in VIP includes informational texts, not just stories. For example, the grade 5project centered on four informational texts about immigration. Carlo and her colleagues (2004)
chose these texts intentionally, knowing that many of their students would have background
knowledge on immigration. Further, they also knew that the many Spanish speakers could learn
to use the shared cognates across Spanish and English.
Although there is a teacher-led reading of the texts in VIP, students also read the textsindependently and with classmates. Further, the vocabulary in the texts is the source of activities
such as Word Wizard, in which students are on the lookout for target words in new settings. In
addition, the vocabulary in the texts is the jumping-off point for instruction that aims to develop
independent word-learning strategies, such as analyzing morphological aspects of words. Theresearchers report that this program has led to improved performance in word knowledge and in
reading comprehension for both ELL as well as English-speaking students.
Conclusion
The strong and established relationship between students vocabulary knowledge and their
ability to successfully comprehend what they read places a heavy demand on classroom teachers,curriculum planners, program developers, organizers of staff development plans, reading
researchers, and on parent outreach programs. The demand is that significant attention be given
to the development of students vocabulary knowledge. Much is known from research about how
young children acquire words and how they learn to use them in spoken language.
Much is also known about the differences in the amount of vocabulary knowledge that young
children bring to school, and the negative impact of what one researcher calls word poverty
(Moats, 2001) on the acquisition and maintenance of reading competence. It is clear that rich orallanguage environments must be created in preschool and kindergarten classrooms to promote the
development of school- and book-related vocabulary.
As students progress through the grades, the development of their vocabulary knowledge must
remain a priority. Attention to vocabulary development is important for all students, but is
especially important for students who are at-risk for learning to read and those who are ELLs.
In summary, we know a lot about vocabulary knowledge, its acquisition, and its importance
across the school years. The challenge is to put what we know to work in the classrooms of
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American schools. The successful reading achievement of many of our students depends upon us
doing so.
References
Anderson, R. C. (1996). Research foundations to support wide reading. In V. Greaney (Ed.),Promoting reading in developing countries (pp. 55-77). Newark, DE: International Reading
Association.
Anderson, R. C., & Freebody, P. (1981). Vocabulary knowledge. In J. Guthrie (Ed.),
Comprehension and teaching: Research reviews (pp. 77-117). Newark, DE: International
Reading Association.